Dr. D’Adamo’s The Blood Type Diet

Basket with vegetablesWhat conditions is this diet best for?

Dr. Peter D’Adamo, ND, creator of The Blood Type Diets™ and author of Eat Right for Your Type: The Individualized Diet Solution to Staying Healthy, Living Longer & Achieving Your Ideal Weight, believes this diet is best for those with digestive disorders and those who wish to lose weight.  He also believes that following this diet will keep many diseases at bay.

What are the main tenets of the diet?

Dr. D’Adamo believes that your blood type affects the way you process foods in the digestive tract.  This diet encourages eating certain foods and types of exercise and avoiding others based on your blood type (A, B, AB or O).

According to Dr. D’Adamo, your blood type can also determine how susceptible you are to certain illnesses.  Calories and fat intake are not monitored on this diet.  However, some find it challenging to follow if more people in the household have different blood types.

For each blood type, D’Adamo divides food into three categories – Highly Beneficial, Neutral, or Avoid.  Your blood type determines which category each food falls into and for each category, there is a long, comprehensive list of foods.

What foods are eaten frequently?

  • Type A: vegetables, beans, grains, legumes, fruit, fish, soy and tofu
  • Type B: vegetables, dairy meat and fish
  • Type AB: tofu, vegetables and fish
  • Type O: lean meats and vegetables

What foods are given up?

  • Type A: Most meats, especially processed, chemicals and processed foods, all dairy, kidney and lima beans, wheat
  • Type B: Chicken, tomato, olives, wheat, corn, buckwheat, rye, lentils, peanuts, sesame
  • Type AB: Corn, buckwheat, tomatoes, refined sugars, red meat, pork, kidney and lima
  • beans, seeds, corn, buckwheat, wheat
  • Type O: Carbohydrates (breads and pastas), refined sugars, all dairy, legumes, beans, nuts, grains, (primarily wheat and corn)

Meal frequency/portion sizes

  • Type A: Eat normal portions. Responds best with calming, gentle or relaxing exercises
  • Type B: Can eat larger portions (high calorie is acceptable). Responds best with creativity and moderate exercise that combines physical and mental endurance.
  • Type AB: Small, frequent portions. Responds best with calming exercises and spiritually/creative fulfillment.
  • Type O: Eat moderate (smaller) proportions. Responds best with intense physical exercise.


Dr. D’Adamo recommends and sells specially formulated supplements for each blood type.  On his website, descriptions of the three types of supplements for each blood type are described:

Will this diet require shopping at a specialty or organic grocery store, or buying the diet’s pre-packaged food (aka, is this diet going to be very expensive to sustain)?

This diet does not require shopping at a specialty grocery store, especially since it is possible to find organic and unprocessed foods at most groceries these days.  The diet could get expensive if you are buying separate groceries for people with different blood types in your household.

What other autoimmune or popular diets is this diet similar to?

As this diet tailors meal plans specifically to the blood type of the individual, it is not very similar to other diets excepts where it advocates eating as many organic, unprocessed and chemically free foods as possible.

Questions for your doctor

  • Is there any reason this diet would not be safe for me to follow from a medical standpoint?
  • Are there any foods you would recommend I not include in my daily diet?
  • Are there any supplements I should take to support me while following this diet?
  • Can you recommend a practitioner to help me with menu planning, recipes and supporting these new diet and lifestyle habits?


About the Author
Jen Wittman, CHHC, AADP, owner of The Healthy Plate, is a Holistic Health Expert & Transformational Coach, providing nutrition and lifestyle counseling for those with thyroid, autoimmune and inflammatory diseases. She reversed her own “incurable” autoimmune thyroid disease with natural diet and lifestyles methods and assists others to heal as well. She also helps parents balance work and play, reduce stress, and cook quick, delicious and nutritious meals so they can have more time for their families, friends and fun. Jen has degrees in culinary arts, psychology, transformational coaching, nutrition, and Italian language. She spent a year honing her cooking skills in Italy and is passionate about laughter, living joyfully with her husband and son, and helping people craft the life of their dreams.

This post contains opinions of the author. is not a medical practice and does not provide medical advice, diagnosis, or treatment.  It is your responsibility to seek diagnosis, treatment, and advice from qualified providers based on your condition and particular circumstances.  Camino Real Ventures, Inc., the company that makes available to you, does not endorse nor recommend any products, practices, treatment methods, tests, physicians, service providers, procedures, clinical trials, opinions or information available on this website.  Your use of the website is subject to our Terms of Use and Privacy Policy




  1. I wrote an article about Blood type O diet according Dr. Peter D’Adamo, so i would like to share with the community. I hope it will be helpful to the people with blood type O

  2. Question: Where on earth would one find an MD, actually not a doctor but introductory level certificate to practice allopathy, Bachelor of Medicine in other parts of the world, PHD in Medicine, signifies , ‘ doctoral level, ‘ … where is one who knows anything about nutrition, let alone endocrinology, epigenetics, allergic response, food sensitivities. Dr. D’ Adamo is recognized internationally as an expert, only assailed here because of turf wars including fear of loss of profits, commercial agriculture and food processing, as well as pharmalogical and medical practitioners… In my advanced years I have decided to speak truth freely, oblivious to the consequences, as directed by grand children… absolute truth tellers.

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